CN214304533U

CN214304533U - Draft tube flow guiding structure

Info

Publication number: CN214304533U
Application number: CN202120631732.6U
Authority: CN
Inventors: 戴剑锋; 巨晓英; 郑宇彤; 蒋继宏; 颜文杰
Original assignee: Beijing Shili Weiye Environmental Protection Technology Co ltd
Current assignee: Beijing Shili Weiye Environmental Protection Technology Co ltd
Priority date: 2021-03-29
Filing date: 2021-03-29
Publication date: 2021-09-28
Anticipated expiration: 2031-03-29

Abstract

The utility model discloses an exhaust funnel flow guiding structure, which comprises an exhaust funnel body, a first exhaust fan and a second exhaust fan, wherein connecting tubes are arranged at the air outlets of the first exhaust fan and the second exhaust fan, the end part of the connecting tube is provided with an air flow gathering port which is connected with the exhaust funnel body, a partition plate is arranged in the exhaust funnel body, a first exhaust cavity and a second exhaust cavity are formed in the exhaust funnel body through the partition plate, the cross section area of the air flow gathering port is increased by the exhaust funnel flow guiding structure, the air speed at the gathering port is reduced, the impact force between two or more air flows is weakened, the exhaust resistance is reduced, a hole-shaped partition plate is added in the middle of the two air flow gathering ports in the exhaust funnel, a small part of air flows pass through the partition plate round holes, the original air flow direction is changed after most of the air flows collide with the partition plate, compared with the traditional structure, the air flows are divided into two paths by a single path, when the two airflows are converged, the impact force is weakened, and the exhaust resistance is reduced.

Description

Draft tube flow guiding structure

Technical Field

The utility model relates to an exhaust stack water conservancy diversion technical field specifically is an exhaust stack water conservancy diversion structure.

Background

At present, when two or more air flows with small displacement (generally displacement less than 30 ten thousand m3/h) are discharged simultaneously, two air flows with equal flow, equal flow speed and opposite directions are generally adopted to be simultaneously merged into an exhaust funnel and uniformly discharged through a discharge port, the two air flows collide with each other at the junction of the exhaust funnel to generate large impact force (namely resistance), the air flows are conducted to a fan motor, the motor needs to provide larger power to overcome the resistance, the excessive power causes the current overload of the motor, the current overload of the motor generally causes the temperature rise of the motor to exceed the rated temperature rise, and the heat productivity of the motor is greatly increased; the rotating speed of the motor is reduced; the motor has low sound; even if the switch trips, the motor stops working, even if a rain-proof cap is arranged at the top of the traditional exhaust funnel, a small amount of rainwater still enters the exhaust funnel, and the rainwater flows into the fan along the airflow inlet of the funnel wall to cause water accumulation in the fan shell.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide an exhaust stack water conservancy diversion structure to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides an exhaust funnel water conservancy diversion structure, includes exhaust barrel, first exhaust fan and second exhaust fan, the air outlet department of first exhaust fan and second exhaust fan installs the connecting cylinder, and the tip of connecting cylinder is provided with the air current and converges the entry, the air current converges the entry and is connected with the exhaust barrel, the inside division board that is provided with of exhaust barrel, and the inside division board that has formed first exhaust chamber and second exhaust chamber through the division board of exhaust barrel, the round hole has been seted up to the surface equidistance of division board, two the air current converges the entry respectively with first exhaust chamber and the inside intercommunication of second exhaust chamber.

Preferably, two vertical columns are fixedly installed in the airflow merging port.

Preferably, the cross-sectional area of the gas flow inlet is twice as large as that of the connecting cylinder outlet.

Preferably, the rain-proof cap is installed to the one end that the air current convergent inlet is located the inside of exhaust barrel.

Preferably, the first exhaust cavity and the second exhaust cavity are communicated through a circular hole.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the utility model discloses an increase air current and converged an entry sectional area, reduced and converged an entry department gas velocity, weakened the impact force between two strands or the stranded, reduced the exhaust resistance.

2. The utility model discloses an increase poroid division board in the middle of two strands of air current collection mouths in the aiutage, few part air currents pass through the division board round hole, change original air current direction behind the most air current collision division board, compare traditional structure, and the air current is two kinds of routes by single route reposition of redundant personnel, and the impact force weakens when two strands of air currents collect, and the exhaust resistance descends.

3. The utility model discloses an it has increased rain-proof cover to converge the mouth at the air current, has avoided the rainwater to get into the exhaust fan of front end along the aiutage pipe wall.

4. The utility model discloses an after the air current converged the entrance sectional area, for the intensity that keeps the aiutage, air inlet has increased the enhancement stand, has increased the steadiness of aiutage.

Drawings

FIG. 1 is a schematic view of the overall connection structure of the present invention;

FIG. 2 is a schematic diagram of the structure of the isolation board of the present invention;

fig. 3 is a schematic structural view of a distribution diagram of the stand column for reinforcing the structure of the air flow gathering port of the present invention.

In the figure: 1. an exhaust cylinder; 2. a first exhaust fan; 3. a second exhaust fan; 4. a separator plate; 5. a first exhaust cavity; 6. a second exhaust chamber; 7. a connecting cylinder; 8. an airflow converging port; 9. rain-proof caps; 10. a circular hole; 11. and (4) a column.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, the present invention provides a technical solution: a flow guide structure of an exhaust funnel comprises an exhaust funnel body 1, a first exhaust fan 2 and a second exhaust fan 3, wherein a connecting cylinder 7 is installed at the air outlet of the first exhaust fan 2 and the air outlet of the second exhaust fan 3, an airflow gathering port 8 is formed in the end part of the connecting cylinder 7, and the exhaust funnel body 1 is exhausted through the work of the first exhaust fan 2 and the second exhaust fan 3;

referring to fig. 1 and 2, the air flow converging port 8 is connected to the exhaust cylinder 1, the partition plate 4 is disposed inside the exhaust cylinder 1, the first exhaust cavity 5 and the second exhaust cavity 6 are formed inside the exhaust cylinder 1 through the partition plate 4, circular holes 10 are equidistantly formed in the surface of the partition plate 4, the two air flow converging ports 8 are respectively communicated with the first exhaust cavity 5 and the second exhaust cavity 6, the partition plate 4 with the circular holes 10 is additionally arranged in the middle between the two air flow converging ports 8 inside the exhaust cylinder 1, a small part of air flows pass through the circular holes 10 of the partition plate 4, and most of the air flows collide with the partition plate 4 to change the original air flow direction.

Referring to fig. 3, two vertical columns 11 are fixedly installed in the airflow converging port 8, and a reinforcing structure of the vertical columns 11 is added at the airflow converging port 8, so that the strength and the stability of the exhaust funnel 1 are improved.

Referring to fig. 1, the sectional area of the airflow converging port 8 is twice the sectional area of the outlet of the connecting cylinder 7, the sectional area of the airflow converging port 8 of the exhaust cylinder 1 is increased by two times, the flow rate of the airflow at the inlet is reduced to 1/2 of the original airflow, the impact force is weakened when the two airflows converge, the exhaust resistance is reduced, the power load of the fan motor is reduced, and the operation energy consumption of the first exhaust fan 2 and the second exhaust fan 3 is reduced; meanwhile, the current overload of the fan motor is avoided, so that the motor works normally.

Referring to fig. 1, a rain cap 9 is installed at one end of the airflow converging port 8 located inside the exhaust cylinder 1, and by adding the rain cap 9 at the airflow converging port 8, after rainwater falling along the cylinder wall is guided by the rain cap 9, the rainwater avoids the airflow converging port 8, is discharged to the bottom of the exhaust cylinder 1 from other angle areas, and flows out through a drain hole of the exhaust cylinder 1.

Referring to fig. 1 and 2, the first exhaust cavity 5 and the second exhaust cavity 6 are communicated through circular holes 10, a plurality of circular holes 10 are formed in the surface of the partition plate 4 at equal intervals, a small part of air flow passes through the circular holes 10 of the partition plate 4, the original air flow direction is changed after the large part of air flow collides with the partition plate 4, partial air flow is divided by the porous structure, exhaust resistance caused by collision of the air flow and the partition plate 4 is reduced, and meanwhile, impact of the air flow on the partition plate 4 is reduced when the small part of air flow passes through the partition plate 4.

The working principle is as follows: when in use, the first exhaust fan 2 and the second exhaust fan 3 work to enable the gas to respectively enter the first exhaust cavity 5 and the second exhaust cavity 6 through the two gas flow gathering ports 8, the middle position between two air flows gathering in the exhaust cylinder 1 and converging 8 is increased with the division board 4 with the round hole 10, a small part of air flow passes through the round hole 10 of the division board 4, the original air flow direction is changed after most of air flow collides with the division board 4, compared with the traditional structure, the air flow is divided into two paths by a single path, the impact force is weakened when the two air flows are gathered, the exhaust resistance is reduced, the sectional area at the air flow gathering 8 of the exhaust cylinder 1 is increased and set to be twice of the original sectional area, the flow speed of the inlet air flow is reduced to 1/2 of the original air speed, the impact force is weakened when the two air flows are gathered, the exhaust resistance is reduced, the power load of a fan motor is reduced, and the operation energy consumption of the first exhaust fan 2 and the second exhaust fan 3 is reduced; meanwhile, the current overload of a fan motor is avoided, the motor works normally, the rain-proof cap 9 is additionally arranged at the airflow converging port 8, and rainwater is prevented from entering the exhaust fan at the front end along the pipe wall of the exhaust funnel.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an exhaust funnel water conservancy diversion structure, includes exhaust barrel (1), first exhaust fan (2) and second exhaust fan (3), the air outlet department of first exhaust fan (2) and second exhaust fan (3) installs connecting cylinder (7), and the tip of connecting cylinder (7) is provided with air current and converges entry (8), air current converges entry (8) and is connected its characterized in that with exhaust barrel (1): the exhaust cylinder body (1) is internally provided with a partition plate (4), a first exhaust cavity (5) and a second exhaust cavity (6) are formed in the exhaust cylinder body (1) through the partition plate (4), round holes (10) are formed in the surface of the partition plate (4) at equal intervals, and an air flow gathering port (8) is communicated with the first exhaust cavity (5) and the second exhaust cavity (6) respectively.

2. The draft tube guiding structure of claim 1, wherein: two vertical columns (11) are fixedly arranged in the airflow converging port (8).

3. The draft tube guiding structure of claim 1, wherein: the sectional area of the airflow convergence opening (8) is twice of that of the outlet of the connecting cylinder (7).

4. The draft tube guiding structure of claim 1, wherein: rain-proof cap (9) is installed to the one end that air current convergent opening (8) are located exhaust barrel (1) inside.

5. The draft tube guiding structure of claim 1, wherein: the first exhaust cavity (5) is communicated with the second exhaust cavity (6) through a circular hole (10).